Backed by venture capital firms Draper Fisher Jurvetson, U.S. Venture Partners and Scale Venture Partners, Box.net was founded in 2005 by chief executive Aaron Levie and CFO Dylan Smith while both were in college.

Box.net focuses on providing cloud access from multiple platforms and devices, with a particular emphasis on mobile. (Here's a blog post by CEO Levie about "achieving mobile ubiquity in the enterprise.")

The company already offers apps for iPhone and iPad users to access cloud-based data. Box.net says it has more than 1 million iOS users combined.

Among the company's customers are Dell, MTV, Skype, the San Francisco Giants, ESPN, Columbia University and LinkedIn.

According to Reuters, once the new financing is completed, Box.net will have raised a total of $112.6 million. Back in February, the company raised $48 million. Other venture capital firms with a stake in Box.net include Andreessen Horowitz, Meritech Capital Partners and Emergence Capital Partners.